Barwick, S.Quinn, C.2006-06-192006-06-192001Journal of Geometry, 2001; 70(1-2):1-70047-24681420-8997http://hdl.handle.net/2440/3605The original publication can be found at www.springerlink.comThis article proves a characterisation of the classical unital that is a generalisation of a characterisation proved in 1982 by Lefèvre-Percsy. It is shown that if U is a Buekenhout-Metz unital with respect to a line l∞ in PG(2, q²) such that a line of PG(2, q²) not through U Ո l∞ meets U in a Baer subline, then U is classical. An immediate corollary is that if U is a unital in PG(2, q²) such that U is Buekenhout-Metz with respect to two distinct lines, then U is classical.enDesarguesian plane, Hermitian curve, unitalJournal article002001153110.1007/PL000009782-s2.0-3375073283461378Barwick, S. [0000-0001-9492-0323]